B0104 - Airbag Circuit Fault in Specific Vehicles Like Ford and Honda

Quick Answer

B0104 means: DTC B0104 signifies an airbag circuit fault, particularly affecting the passenger airbag.

Fix: Check and replace faulty components Cost: $400 - $800 Time: 90-180 minutes

Can I drive with B0104? Immediate action is advised to ensure airbag functionality.

Common Questions

What does B0104 mean and how does it affect my car?

B0104 indicates an issue with the airbag circuit, particularly affecting the passenger airbag. This can prevent the airbag from deploying in an accident, compromising safety. If this code appears, it’s crucial to have your vehicle inspected immediately to ensure that all safety features are functioning correctly.

What are the most common causes of B0104 and how much does it cost to fix?

Common causes of B0104 include a faulty airbag module, poor electrical connections, or wiring damage. Repair costs can vary significantly, ranging from $150 for electrical repairs to around $800 for airbag module replacements, depending on the make and model of your vehicle.

Can I drive my car with B0104 or should I stop immediately?

Driving with the B0104 code is not advisable, as it indicates a potential failure of the airbag system. It’s best to stop driving and have your vehicle inspected to avoid risking your safety during an accident.

How can I diagnose B0104 myself using GeekOBD APP?

To diagnose B0104 with GeekOBD APP, connect the app to your vehicle’s OBD2 port. Use it to scan for codes, retrieve freeze frame data, and monitor live data for the airbag system. Look for any anomalies in the data that may indicate where the fault lies.

What vehicles are most commonly affected by B0104?

DTC B0104 is frequently found in vehicles like the 2016 Ford Explorer, 2017 Honda Accord, and various models from the late 2010s. Always check for any recalls or technical service bulletins (TSBs) related to airbag systems for your specific vehicle.

How can I prevent B0104 from happening again?

To prevent B0104 from reoccurring, conduct regular inspections of your vehicle's electrical system, especially the airbag wiring and connectors. Ensure that any airbag-related repairs or replacements are performed by qualified technicians and keep the vehicle’s interior free from moisture and contaminants that could cause corrosion.

What is B0104?

The diagnostic trouble code (DTC) B0104 indicates a fault within the airbag system's circuit. This code is typically triggered when the airbag control module detects an issue with the airbag deployment circuit, particularly related to the passenger’s airbag. It can be caused by various factors such as a short circuit, an open circuit, or a malfunctioning airbag module. For car owners, especially those driving models like the 2016 Ford Explorer or the 2017 Honda Accord, seeing this code is concerning due to the critical nature of airbag systems in providing safety during accidents. If the B0104 code is present, it’s essential to address it promptly, as it may prevent the airbags from deploying in the event of a collision. This code highlights the importance of regular maintenance checks, as neglecting it can lead to significant safety risks. Additionally, if the airbag light on the dashboard is illuminated, it serves as a visual warning that the airbag system requires immediate attention. Ignoring this code could not only compromise your safety but also lead to more extensive and costly repairs down the line.

System: B - Body (Airbags, Lighting, Security, Climate Control)

Symptoms

Common symptoms when B0104 is present:

  • The airbag warning light remains illuminated on the dashboard, indicating a malfunction in the airbag system.
  • You may experience the seatbelt warning light coming on intermittently, which could signal issues with the airbag system.
  • In some cases, you might notice that the airbag does not deploy during a simulated test, indicating a severe flaw in the system.
  • The vehicle's diagnostic system may provide a message indicating 'Service Airbag System,' which should not be ignored.
  • Passengers may feel less secure knowing that the airbag system is compromised, affecting overall confidence in vehicle safety.

Possible Causes

Most common causes of B0104 (ordered by frequency):

  1. The most common cause of the B0104 code is a faulty airbag module, which has a likelihood of around 40%. This may involve physical damage or internal failures.
  2. A poor electrical connection or damaged wiring, which can often be traced back to wear and tear or improper installation, accounts for about 30% of cases.
  3. Corrosion in connectors and terminals can lead to high resistance and intermittent faults, representing roughly 20% of B0104 occurrences, especially in older vehicles.
  4. Less common but serious causes include issues with the vehicle's onboard computer, which may require reprogramming or replacement.
  5. A rare cause could be the deployment of the airbag during an unintended situation, leading to permanent faults in the airbag system.

B0104 Repair Costs

Cost Breakdown by Repair Type

Airbag Module Replacement

Replacing the faulty airbag module with a new one, ensuring all connections are secure and tested.

  • Total: $400 - $800
  • Success rate: 90%
Electrical Repair

Repairing damaged wiring or connectors, including cleaning and securing connections.

  • Total: $150 - $300
  • Success rate: 85%
Money-Saving Tips for B0104
  • Start with the most common and least expensive repairs first
  • Use GeekOBD APP to confirm diagnosis before replacing expensive parts
  • Consider preventive maintenance to avoid future occurrences
  • Compare prices for OEM vs aftermarket parts based on your needs
  • Address the issue promptly to prevent more expensive secondary damage

Diagnostic Steps

Professional B0104 Diagnosis Process

Follow these systematic steps to accurately diagnose B0104. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion (5-10 minutes)

Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion (5-10 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 2: Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes)

Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 3: Step 3: Component testing - Use a multimeter or specific diagnostic tools to test the airbag module and related components (20-30 minutes)

Step 3: Component testing - Use a multimeter or specific diagnostic tools to test the airbag module and related components (20-30 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 4: Step 4: System function test - Verify proper operation after repairs and clear codes (10-15 minutes)

Step 4: System function test - Verify proper operation after repairs and clear codes (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 5: Step 5: Road test verification - Drive your vehicle under various conditions to confirm repair success (15-20 minutes)

Step 5: Road test verification - Drive your vehicle under various conditions to confirm repair success (15-20 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.

Important Notes

  • Always verify the repair with GeekOBD APP after completing diagnostic steps
  • Clear codes and test drive to ensure the problem is resolved
  • Address underlying causes to prevent code recurrence

Real Repair Case Studies

Case Study 1: Airbag Module Replacement on 2016 Ford Explorer

Vehicle: 2016 Ford Explorer, 45,000 miles

Problem: Customer reported the airbag light was illuminated, and a B0104 code was retrieved.

Diagnosis: Diagnostic testing revealed a faulty airbag module due to internal failure.

Solution: Replaced the airbag module and cleared the error codes. Verified airbag function through a system test.

Cost: $600 (parts: $500 for module, $100 labor)

Result: The airbag light turned off, and subsequent tests confirmed the airbag system was fully operational.

Case Study 2: Electrical Repair on 2017 Honda Accord

Vehicle: 2017 Honda Accord, 30,000 miles

Problem: Customer experienced intermittent airbag warning light and B0104 code.

Diagnosis: Inspection pointed to corroded connectors and frayed wiring in the airbag circuit.

Solution: Repaired the wiring and cleaned the connectors to ensure a solid electrical connection.

Cost: $200 (parts: $50 for connectors, $150 labor)

Result: The airbag system was restored to full function, and the warning light was resolved.

Diagnose B0104

Use GeekOBD APP for professional diagnosis!

  • Real-time data monitoring
  • Advanced diagnostic features
  • Step-by-step repair guidance
  • Professional-grade analysis
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Code Information

Code: B0104
System: Body (Airbags, Lighting, Security, Climate Control)
Severity: HIGH
Category: Body Codes